Focusing dual-wavelength surface plasmons to the same focal plane by a far-field plasmonic lens

被引：12

作者：

Venugopalan, Priyamvada ^{[1
]}

Zhang, Qiming ^{[1
]}

Li, Xiangping ^{[1
]}

Kuipers, L. ^{[3
]}

Gu, Min ^{[1
,2
]}

机构：

[1] Swinburne Univ Technol, Fac Sci Engn & Technol, Ctr Microphoton, Hawthorn, Vic 3122, Australia

[2] Swinburne Univ Technol, Fac Sci Engn & Technol, CUDOS, Hawthorn, Vic 3122, Australia

[3] FOM Inst AMOLF, Ctr Nanophoton, NL-1098 XG Amsterdam, Netherlands

来源：

OPTICS LETTERS | 2014年 / 39卷 / 19期

基金：

澳大利亚研究理事会;

关键词：

BEAM;

D O I：

10.1364/OL.39.005744

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this Letter, we demonstrate the nanoscale focusing of surface plasmons (SPs) at two different wavelengths to the same focal plane by a far-field plasmonic lens both numerically and experimentally. The far-field plasmonic lens, which consists of an annular slit and a concentric groove and is capable of focusing dual-wavelength SPs to the same focal plane, is characterized by a scanning near-field optical microscope under both linearly and radially polarized illuminations. The demonstrated far-field plasmonic lens can provide immense opportunities for on-chip photonic applications, including dual-wavelength-based super-resolution imaging and ultra-high-density optical data storage. (C) 2014 Optical Society of America

引用

页码：5744 / 5747

页数：4